(CNN) – Sources tell CNN they have found more data deletions on a hard drive belonging to one of the pilots of missing Malaysia Airlines Flight 370. They say the deletions happened more recently than Malaysian officials first revealed.

(CNN) – The Telegraph reported Friday it had a transcript documenting 54 minutes of back-and-forth between the missing Malaysia Airlines Flight 370's cockpit and ground control – from taxiing in Kuala Lumpur to the final message of "All right, good night." CNN hasn't confirmed that this reported transcript it genuine, and The Telegraph said Malaysia's prime minister said the transcript wouldn't be officially released.

(CNN) – The search for missing Malaysia Airlines Flight 370 remains concentrated on what is "about the most inaccessible spot you could imagine on the face of the earth," Australian Prime Minister Tony Abbott told reporters Friday.

Searchers are combing an area almost 1,500 miles off the coast of Perth, Australia, in the southern Indian Ocean, where five days ago a satellite photographed objects that Australian authorities say could be related to the plane.

Today, the search came up empty.

Australian Ambassador to the U.S. Kim Beazley, who was also the country's former aviation minister, explains the treacherous sea conditions of the area in the video above.

(CNN) – It's not just planes, ships, and high tech underwater gear that could be critical in solving the mystery of Flight 370.

The FBI hopes good, old-fashioned forensics will also help shed some light on what happened. Specifically, they're looking into a flight simulator found at one of the pilot's home to see what files, if any, he may have deleted.

At this point, there's nothing indicating the pilots were planning the plane's disappearance. But with few clues as to what happened to Malaysia Airlines Flight 370, sources say the FBI is throwing everything it has at figuring out what's on the copy of the hard drive containing information from the captain's home flight simulator, and both of the pilots' laptops.

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